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Finding the Fourth Proportional to 2,563.76, 3,845.64 and 714.88

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Solution

The fourth proportional to 2,563.76, 3,845.64 and 714.88 is: 1,072.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,563.76 : 3,845.64 = 714.88 : x
  2. Step 2: Convert to fraction form
    2,563.76/3,845.64 = 714.88/x
  3. Step 3: Cross multiply
    2,563.76x = 3,845.64 × 714.88
  4. Step 4: Simplify right side
    2,563.76x = 2,749,171.12
  5. Step 5: Solve for x
    x = 2,749,171.12/2,563.76
  6. Step 6: Final answer
    x = 1,072.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.